Category: Smartphone Articles

Let us learn to add new contacts to the Contacts database of the device. The application will display a form prompting the user to enter information like name, address, e-mail address, and phone number of the contact. After entering the information for the new contact, when the user selects the Submit button, a new contact […]

Almost in all web applications, we find a Sign Up or Register link asking visitors to create an account. The information entered by the visitor while creating the account is stored in server side database. The user information is fetched from the server side tables when user Signs In the application in future. In this […]

Session Management No web application is complete without session management – a concept that helps track visitors to our web application. HTTP is a stateless protocol, so the interaction between browsers and web servers is stateless. Each HTTP request a browser sends to a web server is independent of any other request. The stateless nature […]

Application to Obtain User Information Let’s create a panel in our application that will ask the user to enter information such as user id, contact number, and email address. To add a form we need to do two things: Add a panel to our application containing a form with text input fields Add a list […]

We usually implement AJAX whenever we need to insert or fetch data from the server-side database tables, thus improving performance. Let’s say we want to display detailed book information whose ISBN number has been entered by the user. This data is already stored in the books server-side database table. We’ll need following things to fetch the […]

Forward Navigation Via Toolbar Buttons In this example, we will learn to use the toolbar buttons for forward navigation. To understand how it is done, let’s create a small application with six panels: Home, Categories, Subcategories, Select Books, Items in Cart and Checking Out. Let’s assume that the ids assigned to the six panels are home, bookscategories, subcategories, […]

Creating a Client-Side Database and Tables In this example, we’ll be using a JavaScript database API for creating the client-side database. This API provides a simple method of storing, retrieving, and marinating user-supplied information. In addition, it provides a relational database model, and so can easily handle complex data. We can use standard SQL statements […]

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Circular Queue Circular Queue uses memory quite efficiently when compared with Linear Queue because in Linear Queue even if there are empty spaces at the front in the queue, it will display “Queue Full” message if the rear pointer reaches at the end of the queue. Circular queue is assumed to be circular array as […]

Converting Binary Number To Decimal NumberTo convert any binary number to decimal, there are two steps:First step is to separate all binary digits of the binary number and store the individual bits in a queue. To separate binary digits, the binary number is divided by 10. On every division, the remainder is added to the […]